Question about Hitachi 50EX20B 50" Rear Projection Television

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Picture good but no sound on my Hitachi model 50ex20b

No sound but picture good on my Hitachi model 50Ex20B. When I turn it off last nite it was find. Turn it on the morning NO sound but picture was good.

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I had a problem last year and a repairman came in and re-soldered the connections on the electronic board. It has worked fine since.

Posted on Jan 21, 2010

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Your audio switch on the back may have gotten moved please check the switch

Posted on Dec 29, 2009

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1 Answer

Go on then shut off


Check the site www.TvRepairKits.com for a pats kit for your model. They have many "common fault" fixes avail premade.

Apr 19, 2013 | Hitachi Projection Televisions

1 Answer

My screen goes blank after about 30 seconds or so, any ideas?


about the only common issue (if model listed here is correct) is bad solder connections at the vertical output IC.

Usually in this case jarring the set will cause it to try to open and allow the picture--if no vertical sweep (pic top to bottom) set will blank all 3 tubes to prevent an instant burn mark on them.

Apr 19, 2012 | Hitachi 50EX20B 50" Rear Projection...

1 Answer

Hitachi 50ex20b shuts of


Hi, you need to stop running the set , call a tech and have him do some solder re-work, this is a cheap, easy fix, keep running it that way and it will become an expensive fix, gl, video-tek

Jun 06, 2009 | Hitachi 50EX20B 50" Rear Projection...

2 Answers

CONVERGENCE


Check for bad resistors low ohms near your STKs big black ics.

May 04, 2008 | Hitachi 50EX20B 50" Rear Projection...

1 Answer

Does Not Turn On


I actually ended up with this set. It turned out to be a very nasty short circuit on the audio board. To trouble shoot disconnect PSD5 to isolate the power supply. It's the 3rd connector from the back on the left side of the power supply. If you turn on the tv and now see 5 green leds and the one red led, look for a short outside of the power supply. The short on this set was on the left side of the audio board (which is to the left of the power supply) There was a wire add and a part add covered in wax. The bare wire was touching a ground but you have to remove the wax to see it. Since this may be a change that was made to all sets of this model, it may be a common failure. Good Luck all.

Dec 25, 2007 | Hitachi 50EX20B 50" Rear Projection...

1 Answer

Convergence pots do nothing


Check B+ sources--possible open fuse device== that will cause out of alignment/no control.

Oct 02, 2007 | Hitachi 50EX20B 50" Rear Projection...

2 Answers

Hitachi 50EX20B Bigscreen TV


You can download a PDF from here: http://www.servicemanuals.net/results.aspx?type=SM&brand=0&model=50EX20B Make sure that the coolant is not leaking out onto the printed circuit boards. i have had the remote sensor cause this problem before and also I have had bad capacitors in the sweep and the main power supplies. Good Luck

Jun 14, 2007 | Hitachi 50EX20B 50" Rear Projection...

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